Malicious PDF — malware analysis report

Static analysis result for SHA-256 7be5245b1e0d8cbb…

MALICIOUS

PDF

217.5 KB Created: 2021-06-30 12:11:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: a41a650de28275824cbad6bad2bf64cb SHA-1: 5eb847696b65a4cc6cc314c0282608478663d1db SHA-256: 7be5245b1e0d8cbbeab7175b79bd8dfba347d2e24440d69cf7e03eccb47cde13
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ClamAV and an ML classifier, and heuristics indicate it is an advance-fee scam lure. The document body is heavily obfuscated, but the presence of numerous URLs pointing to compromised WordPress sites suggests an attempt to host malicious content or redirect users. The primary attack pattern is likely spearphishing attachment, leading to a scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077eb8cbca9f---bijakubowuk.pdf In PDF document text
    • https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/ggsnv0becjo16n9g49jf1ipe9b/33191608282.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609627e28199e---33896413047.pdfIn PDF document text
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160a1f8bb8db90---jijeguxifitimi.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bee3fa029e---geguxuzibodena.pdfIn PDF document text
    • https://www.brightfieldbusinesshub.co.uk/wp-content/plugins/super-forms/uploads/php/files/drq8mgupo52atuqrkt8rf3aah0/dikilami.pdfIn PDF document text
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c94edf16a9---daliwozirixakusajup.pdfIn PDF document text
    • https://useoneconvo.com/wp-content/plugins/super-forms/uploads/php/files/8e0db4315ed53845a02d85539dca1969/xanosejepenaxo.pdfIn PDF document text
    • https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/fkp6dhvv59s27kapta6q6upci3/22178305758.pdfIn PDF document text
    • https://www.westcountrystoves.co.uk/wp-content/plugins/super-forms/uploads/php/files/7152702cd15bff0660a3d6147c037296/topuzedozavidumali.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071b5bd12086---tiduropabixirurazeku.pdfIn PDF document text
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/834d5baede7f73437a3d2089f036d3e1/suvurafirebopobo.pdfIn PDF document text
    • http://zaun-produzent.de/userfiles/file/jawegopexetilox.pdfIn PDF document text
    • http://iccarrentals.com/files/file/fezepuzijunabewatim.pdfIn PDF document text
    • http://agro-vostok.ru/userfiles/file/makiwew.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16087d10559398---10924578269.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/wavuseferemekijuto.pdfIn PDF document text
    • https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/93473b56f7b436227fbe669c91ac4681/18374301027.pdfIn PDF document text
    • http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/2e9e876cf6eaf774d927aba4ed7b89c0/duvanilabofevisazakazifo.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/25e322e6f8f2aede980720b6726178d0/donosevanutasisapete.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=patent+in+sentencePDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002f861.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F861 9960 bytes
SHA-256: 5a2227fbafb223840e64f9e727cd85c7cd68643f2b4083caaf2c1d85e327ffa9
font_01_sfnt_off00030e8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E8E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000326a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x326A0 19692 bytes
SHA-256: ae4954a595399265c0524b179f88f5dc50904d1c694d19aaf4076ad196f7498d

Open this report in the interactive analyzer, or submit your own file for analysis.